2104139domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of Fermat pseudoprimes to bases 2 and 3 less than 10^n.at n=16A114246Number of strings of numbers x(i=1..7) in 0..n with sum i*x(i) equal to n*7.at n=20A184707Prime numbersat n=156099